Hairy Four O'clock

Allionia hirsuta Pursh, Fl. Am. Sept. 728. 1814
Calymenia pilosa Nutt. Gen. 1: 26. 1818.
Calymenia hirsuta Nutt. Gen. 1: 26. 1818.
Oxybaphus pihsus Sweet, Hort. Brit. 1: 334. 1826.
Oxybaphus hirsutus Sweet, Hort. Brit. 1: 334. 1826.
Oxybaphus hirsutus integrifolius Choisy, in DC. Prodr. 13 2 : 433. 1849.
Oxybaphus nyctagineus pihsus A. Gray, in Torr. Bot. Mex. Bound. Surv. 174, in part. 1859.
Mirabilis hirsuta MacM. Metasp. Minn. Valley 217. 1892.
Mirabilis nyctaginea hirsuta Heimerl, Beitr. Syst. Nyct. 22. 1897.
Mirabilis nyctaginea pilosa Heimerl, Beitr. Syst. Nyct. 23, in part. 1897.
Allionia pilosa Rydb. Bull. Torrey Club 29: 690. 1902.
Allionia aggregata Rydb. Bull. Torrey Club 29: 692. 1902. Not A. aggregata Spreng. 1825.
Allionia hirsuta rotundifolia Iyunell, Bull. Leeds Herb. 2: 6. 1908.
Allionia hirsuta color adensis Standley, Contr. U. S. Nat. Herb. 12: 353. 1909.
Allionia chersophila Standley, Contr. U. S. Nat. Herb. 12: 354. 1909.
Allionia hirsuta aggregata A. Nelson; Coult. & Nels. Man. 173, in part. 1909.
Allionia pilosa decumbens A. Nelson; Coult. & Nels. Man. 173, in part. 1909. Not Calymenia
decumbens Nutt. 1818.
Stems solitary or few, erect or decumbent, 2-10 dm. high, usually very stout, simple or sparsely branched below the inflorescence, green or glaucescent, densely hirsute or long-pilose near the base and usually up to the inflorescence, sometimes merely puberulent, but always hirsute about the nodes, the internodes usually elongate ; petioles 5 mm. long or shorter, very stout, usually wanting; leaf-blades mostly ovate-oblong, sometimes lance-linear or broadly ovate, 3-11 cm. long, 0.4-5 cm. wide, subcordate to long-attenuate at the base, gradually narrowed to the obtuse or acutish apex, entire or subsinuate, thick and succulent or sometimes thin, usually bright-green, densely hirsute or long-pilose or often merely viscid-puberulent or, in age, glabrate; inflorescence in young plants often wholly of axillary involucres, in mature plants cymose-paniculate, copiously or sparsely branched, the branches mostly opposite, densely viscid-pilose, bearing few reduced bractlike leaves; involucres commonly 3-flowered, slender-pedunculate, 4-5 mm. long in anthesis, in age 10-18 mm. long, densely or sparsely viscid-pilose, the lobes broad, rounded or obtuse; perianth 8-10 mm. long, sparsely pilose, pink; stamens 3-5, long-exserted ; fruit obovoid, 4^5 mm. long, dark-olivaceous, densely shortpilose, the angles broad, smooth or nearly so, the sides rugose or short-tuberculate ; seed obovoid, 3 mm. long, brownish-stramineous.
Type locality: "Upper Louisiana."
Distribution: Dry fields and hillsides, Wyoming to Manitoba and Wisconsin, southward to Missouri, Texas, and New Mexico ; rarely adventive eastward.

Allionia hirsuta Pursh, Fl. Am. Sept. 728. 1814
Calymenia pilosa Nutt. Gen. 1: 26. 1818.
Calymenia hirsuta Nutt. Gen. 1: 26. 1818.
Oxybaphus pilosus Sweet, Hort. Brit. 1: 334. 1826.
Oxybaphus hirsutus Sweet, Hort. Brit. 1: 334. 1826.
Oxybaphus hirsutus iniegrifolius Choisy, in DC. Prodr. 13 2 : 433. 1849.
Oxybaphus nyctagineus pilosus A. Gray, in Torr. Bot. Mex. Bound. Surv. 174, in part. 1859.
Mirabilis hirsuta MacM. Metasp. Minn. Valley 217. 1892.
Mirabilis nyctaginea hirsuta Heimerl, Beitr. Syst. Nyct. 22. 1897.
Mirabilis nyctaginea pilosa Heimerl, Beitr. Syst. Nyct. 23, in part. 1897.
Allionia pilosa Rydb. Bull. Torrey Club 29: 690. 1902.
Allionia aggregata Rydb. Bull. Torrey Club 29: 692. 1902. Not A. aggregata Spreng. 1825.
Allionia hirsuta rotundifolia Lunell, Bull. Leeds Herb. 2: 6. 1908.
Allionia hirsuta coloradensis Standley, Contr. U. S. Nat. Herb. 12: 353. 1909.
Allionia chersophila Standley, Contr. U. S. Nat. Herb. 12: 354. 1909.
Allionia hirsuta aggregata A. Nelson; Coult. & Nels. Man. 173, in part. 1909.
Allionia pilosa decumbens A. Nelson; Coult. & Nels. Man. 173, in part. 1909. Not Calymenia
decumbens Nutt. 1818.
Stems solitary or few, erect or decumbent, 2-10 dm. high, usually very stout, simple or sparsely branched below the inflorescence, green or glaucescent, densely hirsute or long-pilose near the base and usually up to the inflorescence, sometimes merely puberulent, but always hirsute about the nodes, the internodes usually elongate; petioles 5 mm. long or shorter, very stout, usually wanting; leaf -blades mostly ovate-oblong, sometimes lance-linear or broadly ovate, 3-11 cm. long, 0.4-5 cm. wide, subcordate to longattenuate at the base, gradually narrowed to the obtuse or acutish apex, entire or subsinuate, thick and succulent or sometimes thin, usually bright-green, densely hirsute or long-pilose or often merely viscid-puberulent or, in age, glabrate; inflorescence in young plants often wholly of axillary involucres, in mature plants cymose-paniculate, copiously or sparsely branched, the branches mostly opposite, densely viscid-pilose, bearing few reduced bractlike leaves; involucres commonly 3-flowered, slender-pedunculate, 4-5 mm. long in an thesis, in age 10-18 mm. long, densely or sparsely viscid-pilose, the lobes broad, rounded or obtuse; perianth 8-10 mm. long, sparsely pilose, pink; stamens 3-5, long-exserted; fruit obovoid, 4-5 mm. long, dark-olivaceous, densely shortpilose, the angles broad, smooth or nearly so, the sides rugose or short-tuberculate; seed obovoid, 3 mm. long, brownish-stramineous.
Type locality: "Upper Louisiana.''
Distribution: Dry fields and hillsides, Wyoming to Manitoba and Wisconsin, southward to Missouri, Texas, and New Mexico; rarely adventive eastward.